1. A form of the indefinite article; a form of the Greek prefix a; an abbreviation of the Greek prefix ana.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• nn,
• ln,
• ano,
• and,
• atn,
• aan,
• anof,
• ahnd,
• amno,
• avy,
• aj,
• ao,
• eacn,
• arn,
• anuf,
• kan,
• dn,
• andu,
• anl,
• apun

• Ano,
• anew,
• Anh,
• ana,
• Anya,
• Ann,
• ani,
• Annie,
• anaya,
• anoa,
• anna,
• any,
• annoy,
• Anne,
• anu,
• ane.

The adjective form of "an" is "an". However, "an" is more commonly used as the indefinite article for words beginning with a vowel sound, while "a" is used for words beginning with a consonant sound.

The plural form of the word "an" is "some"

The singular form of the word "an" is "a"